In today's image, we see an image of an exoplanet which is in the process of carving out a gap in the disk of material around the star from which it formed. We can think of this as how a planet clears its orbit of debris, which is part of the IAU planet definition.

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This Podcast is an authorized New Media Mirror Site for APOD. You can access the image and website directly at: Astronomy Picture of the Day. You can use the archive link below the image to select the photo corresponding to the date of this podcast.

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